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Significant photoinduced Kerr rotation achieved in semiconductor microcavities

Significant photoinduced Kerr rotation achieved in semiconductor microcavities
Significant photoinduced Kerr rotation achieved in semiconductor microcavities
Giant Kerr rotation and ellipticity are observed and investigated in an asymmetric planar microcavity with a quantum well in the active region. Rotation angle of the polarization plane as well as ellipticity were determined from time- and frequency-resolved measurements of the Stokes vector components of reflected light. It was found that in a small range of the cavity mode detunings the polarized pump pulse creates a large splitting of the lower polariton branch while leaving its linewidth almost the same. This fact gives a possibility to observe at such detunings the Kerr rotation angle and ellipticity, close to their extremes. A theoretical analysis shows that the decisive role in reaching extreme polarization rotation angles is played by the structure asymmetry. Comprehensive analysis of the polarization state of the light in this regime shows that both renormalization of the exciton energy and the saturation of the excitonic resonance contribute to the observed optical nonlinearities.
1098-0121
Cherbunin, R. V.
b9df2cc9-9bc0-4f94-9b56-859d6874dd53
Vladimirova, M.
40b8cb0b-5121-48e1-93b8-cc3df9c05ef6
Kavokin, K. V.
b29928c1-4e70-4305-bc0b-261f4557a835
Mikhailov, A. V.
6d189d78-e2b2-423e-b078-bb6d235c78dd
Kopteva, N. E.
e3029714-de3a-49c9-91ff-aa77dd5a7590
Lagoudakis, P. G.
ea50c228-f006-4edf-8459-60015d961bbf
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Cherbunin, R. V.
b9df2cc9-9bc0-4f94-9b56-859d6874dd53
Vladimirova, M.
40b8cb0b-5121-48e1-93b8-cc3df9c05ef6
Kavokin, K. V.
b29928c1-4e70-4305-bc0b-261f4557a835
Mikhailov, A. V.
6d189d78-e2b2-423e-b078-bb6d235c78dd
Kopteva, N. E.
e3029714-de3a-49c9-91ff-aa77dd5a7590
Lagoudakis, P. G.
ea50c228-f006-4edf-8459-60015d961bbf
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b

Cherbunin, R. V., Vladimirova, M., Kavokin, K. V., Mikhailov, A. V., Kopteva, N. E., Lagoudakis, P. G. and Kavokin, A. V. (2015) Significant photoinduced Kerr rotation achieved in semiconductor microcavities. Physical Review B, 91 (20), [205308]. (doi:10.1103/PhysRevB.91.205308).

Record type: Article

Abstract

Giant Kerr rotation and ellipticity are observed and investigated in an asymmetric planar microcavity with a quantum well in the active region. Rotation angle of the polarization plane as well as ellipticity were determined from time- and frequency-resolved measurements of the Stokes vector components of reflected light. It was found that in a small range of the cavity mode detunings the polarized pump pulse creates a large splitting of the lower polariton branch while leaving its linewidth almost the same. This fact gives a possibility to observe at such detunings the Kerr rotation angle and ellipticity, close to their extremes. A theoretical analysis shows that the decisive role in reaching extreme polarization rotation angles is played by the structure asymmetry. Comprehensive analysis of the polarization state of the light in this regime shows that both renormalization of the exciton energy and the saturation of the excitonic resonance contribute to the observed optical nonlinearities.

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Published date: 18 May 2015

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Local EPrints ID: 430561
URI: http://eprints.soton.ac.uk/id/eprint/430561
ISSN: 1098-0121
PURE UUID: bf656f8a-090b-47b5-bcd8-2b3064c3b0f2

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Date deposited: 03 May 2019 16:30
Last modified: 03 May 2019 16:30

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Contributors

Author: R. V. Cherbunin
Author: M. Vladimirova
Author: K. V. Kavokin
Author: A. V. Mikhailov
Author: N. E. Kopteva
Author: A. V. Kavokin

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